The public should avoid any body contact with the water until the advisory is lifted.

The Health Department said that blue-green algae, which occurs naturally, can cause rash, hives or blisters. Swallowing water can led to abdominal pain, diarrhea and vomiting, while water drops can lead to runny eyes and nose, sore throat or allergic reactions, the Health Department said.

Such booms are characterized by a pea-green tint to the water, and scum floating on the surface.